Xeams

Overview

Xeams combines an email server and spam firewall, running on its own, in front of an existing mail server, or in hybrid mode. It suits organizations that want control over mail filtering and administration, especially those comfortable managing a self-hosted deployment. Its appeal is the breadth of mail and filtering tools; the key trade-off is matching its user limits and deployment-based or tiered costs to your setup.

Key features

Xeams supports SMTP, POP3, and IMAP, as well as DKIM, SPF, DMARC, and MTA-STS. Its spam filtering draws on sender reputation, authentication checks, attachment and content rules, Bayesian analysis, and virus checks. That layered approach is useful for organizations that want to tune filtering at the gateway rather than rely on a single screening method.

Quarantined messages stay on the server for 15 days by default and can be reached through the web interface or an IMAP client. Administrators get live email monitoring, logs, reporting, configurable retention, and tiered administration through a web interface. Xeams also describes Active Directory integration and OAuth 2.0 outbound relaying for services such as Microsoft Exchange Online and Google Workspace.

Outbound tools include DKIM signing, REST APIs, event webhooks, email campaigns, read receipts, and header sanitization. End-to-end email encryption is an Enterprise feature; certain plugins are limited to on-premise or dedicated cloud systems. The maker says Xeams can help with regulations including HIPAA, GLBA, CFPB, FERPA, Sarbanes-Oxley, and Safe Harbor, but that should not be read as a guarantee of compliance.

Pricing

The Community Edition is free for up to 5 users when used personally as a hobby. Spam filtering is limited to 5 users; it allows unlimited users if junk filtering is not used. That makes it a practical way to run a small personal mail setup, but not a free route to filtering mail for a larger organization.

Enterprise Edition has tiered per-user monthly pricing, from $1.9167 (1–9 users) to $0.1438 (over 5000 users), with no minimum cost. The subscription can be on-premise or cloud; shared cloud adds $100/month/machine with 20GB disk space. The lower per-user rate applies at the largest stated tier, so compare the actual tier and any shared-cloud cost against your deployment before choosing.

Enterprise Edition with Support costs $300/year for every deployed instance and includes phone and email support. It is priced per instance rather than per user, so the cost grows with deployments, not directly with the number of mailboxes. Community Edition phone and email support is also listed at $300/year.

A new installation gets Enterprise Edition features for 30 days, then converts to Community Edition unless a license is purchased. This provides a time-limited way to evaluate Enterprise features, but the post-trial user and spam-filtering caps still matter if you continue without a license.

Platforms

Xeams is offered for API, Linux, macOS, self-hosted, web, and Windows environments. Its download page also offers installers for UNIX/BSD, virtual machines, and QNAP. The range gives administrators several deployment options, though Xeams is a gateway product rather than a hosted-only service.

Who it's for

Xeams is best suited to teams that want a configurable mail gateway or mail server, need quarantine and administrative visibility, and can manage on-premise or cloud deployment. Its free edition is most relevant to personal hobby use; organizations needing spam filtering beyond five users should assess Enterprise pricing and the cost of support per instance.

Pros and cons

• Pros: It can run standalone, in front of another mail server, or in hybrid mode, accommodating different mail architectures.
• Pros: Filtering combines authentication checks, reputation, content rules, Bayesian analysis, and virus checks rather than relying on one signal.
• Pros: Quarantine access through either web or IMAP, plus monitoring and reporting, gives administrators multiple ways to review mail flow.
• Cons: Free spam filtering stops at five users, making the Community Edition a poor fit for larger filtering deployments.
• Cons: Shared cloud adds $100/month/machine to the subscription, and support pricing is separate for Community Edition or charged per Enterprise instance.
• Cons: End-to-end encryption is reserved for Enterprise, with some plugins further limited to on-premise or dedicated cloud systems.

Alternatives

For a directory of comparable products, browse Email Security Gateways.

Choose MailScanner if you want a free, open-source email gateway for Linux and self-hosted use. Consider Mailprotector if a free email security check is useful before discussing its products with an account manager. VM Backup is a backup option rather than a mail-security alternative. Mimecast Data Leak Prevention, Proxmox Backup Server, Abnormal Email Security, Check Point Harmony SASE, and Symantec IT Management Suite are other listed products to compare.

Verdict

Look elsewhere if you need free spam filtering for more than five users or prefer not to manage a gateway deployment and its associated costs.